Drop the redundant "N tracks" / "N albums" toolbar count (the tab-menu
badge is now the permanent counter) and split the content area: the
Tracks tab renders in a virtualized, self-scrolling ListView +
ListScrollbar (the PlaylistView pattern, now possible thanks to the
fixed-chrome restructure), while Albums/Artists/Playlists/Labels keep a
Flickable. Loading/error states center in the content area. Group headers
+ all per-row behavior are preserved inside the ListView items.
cc
vicrodh
4465a36716